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Chemistry - Chemical Equilibrium

Practise 6 JEE Advanced previous year questions on Chemical Equilibrium, compiled from papers spanning 2006 to 2020. Each question is pulled directly from the actual exam paper it appeared in, so you're practising in the exact style and difficulty JEE Advanced tests.

Chemical Equilibrium has been asked in 5 of the 27 years of JEE Advanced papers analysed (2000–2026), with 6 questions in all. 0% of them were easy, 67% moderate and 33% tough. Most of its questions came from 2016, with 2 questions that year. In the last three years (2024–2026) it had 0 questions across 6 papers, about 0 per paper.

The chapter's 2 topics are not weighted equally: Law of Mass Action, Equilibrium Constant (Kc and Kp) and its Application (4 questions, 67%) and Le chatelier's principle (2 questions, 33%) have been asked the most. Law of Mass Action, Equilibrium Constant (Kc and Kp) and its Application has produced the most tough questions (1).

  1. 1Consider the reaction A ⇌ B at 1000 K . At time t ' , the temperature of the system was increased to 2000 K and the system was allowed to re2020 (Paper 1)Law of Mass Action, Equilibrium Constant (Kc and Kp) and its Application
  2. 2Paragraph: Thermal decomposition of gaseous to gaseous at takes place according to the following equation: The standard reaction Gibbs energ2016 (Paper 2)Law of Mass Action, Equilibrium Constant (Kc and Kp) and its Application
  3. 3Paragraph: Thermal decomposition of gaseous to gaseous at takes place according to the following equation: The standard reaction Gibbs energ2016 (Paper 2)Law of Mass Action, Equilibrium Constant (Kc and Kp) and its Application
  4. 4The thermal dissociation equilibrium of CaCO 3 s is studied under different conditions. CaCO 3 s CaO s + CO 2 g For this equilibrium, the co2013 (Paper 2)Le chatelier's principle
  5. 5The equilibrium in aqueous medium at shifts towards the left in the presence of2011 (Paper 2)Le chatelier's principle
  6. 6then the formation constant of is2006Law of Mass Action, Equilibrium Constant (Kc and Kp) and its Application

Frequently Asked Questions

1.How many questions are available for Chemical Equilibrium?

This chapter includes 6 questions compiled from JEE Advanced papers spanning 2006 to 2020.

2.Are these questions only from JEE Advanced, or from other exams too?

These are JEE Advanced questions specifically for the Chemical Equilibrium chapter. Questions from other exams like JEE Main or NTA Abhyas (JEE Main) are organised separately under their respective exam sections.

3.Is Chemical Equilibrium an important chapter for JEE Advanced Chemistry?

Chemical Equilibrium has appeared in 5 of the 21 years of JEE Advanced papers covered here, with 6 questions across 5 papers - about one per paper it appears in.

4.What is the difficulty level of Chemical Equilibrium questions in JEE Advanced?

Of the 6 questions analysed for this chapter, 0% are easy, 67% moderate and 33% tough. 2016 had the most, with 2 questions.

5.Which topics in Chemical Equilibrium should I focus on?

These topics have carried the most weightage in Chemical Equilibrium:

  • Law of Mass Action, Equilibrium Constant (Kc and Kp) and its Application - 4 questions (67%)
  • Le chatelier's principle - 2 questions (33%)
  • Law of Mass Action, Equilibrium Constant (Kc and Kp) and its Application has produced the most tough questions (1).
6.Is Chemical Equilibrium's weightage in JEE Advanced going up or down?

Across all 5 papers analysed, Chemical Equilibrium has averaged about 1.2 questions per paper. In the last three years (2024–2026), that average has fallen, at about 0.0 questions per paper. Use the year-wise numbers on this page for the exact trend before you decide how much time to give it.